135 entries under adjective topic. ×

1
staunch(strong, firm, true, fixed)
1
steely
1
sure(firm, true, fixed, resolute)
1
tenacious(firm, true, fixed, constant)
1
tended(secure, safe, snug, intact)
1
undamaged(secure, safe, snug, intact)
1
unharmed(secure, safe, snug, intact)
1
unhurt(secure, safe, snug, intact)
1
uninjured(secure, safe, snug, intact)
1
unmolested(secure, safe, snug, intact)
1
unscathed(secure, safe, snug, intact)
1
unthreatened(secure, safe, snug, intact)
1
untroubled
1
vindicated(secure, safe, snug, intact)
1
warm
1
watched(secure, safe, snug, intact)
1
watertight
0
adamant
0
adjusted(safe, sheltered, protected, locked)
0
anchored(safe, sheltered, protected, locked)
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APASmart Define. (2015). impregnable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impregnable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impregnable thesaurus" https://smartdefine.org/impregnable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, impregnable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impregnable/thesaurus/synonyms>.
MLASmart Define. "impregnable thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/impregnable/thesaurus/synonyms>